Forging machine



Juily 3, 1 923. 1,46110111 F. A. HALLECK FORGING MACHINE Filed July 11 1917 2 Sheets-Sheet 1 M 3, 1923. mmmm F. A. HALLECK FORGING MACHINE Filed July 11 191.7 2 She'cs-Sheet 2 FRANK A. HALLEGK, or can PARK, I

COMPANY, A oonronerion or To all who-m.

Mltlhlll LLINOIS, ASSIGNGR TO SULLIVAN MACHINERY MASSACHUSETTS.

ronerire MACHINE.

Application filed July 11, 1917.

it may concernr Be it known that I, FRANK A. HALLnoK, a citizen of the United States, residing at Oak Park,,in the county of Cook and State 5 of Illinois, have invented certain new and useful Impro of which the vements in Forging Machines, following is a full, clear, and

exact specification.

7 My inventi It has for or the like in on relates to forging machines. its object to gage drill steels an improved manner whereby a wide variation in gage may be obtained.

A further 0b Vide improved ject of'my invention is to proand slmphfied gaging mechanism of rugged character whereby the necessity for utilizing loose pieces eliminated and whereby,

simple adjustment adapted in the dies is by a relatively to be made by even an unskilled operator, the desired variation in further object of my gage may be effected. A still invention is to provide improved means for simultaneously accurately gaging and forming reaming edges,

on the wings of drill bits.

These and other objects of my improvement, will, however,

hereinafter m ore fully appear.

In the accompanying drawings, I have shown, for purposes bodiment 'whi of illustration, one emoh my invention may assume in practice, it being understood, however, that the invention may be used in other relations.

In these drawings;-

Fig. 1 is an end elevation of a drill on line 33 of Fig. 2, showing in dotted lines the position of a bit to be gaged.

Fig. l is a vertical sectional view taken.

on line 4l' of Fig. 2. Fig. 5 is a side elevation of the dies shown in Fig. 2.

Fig. 6 is a plan view of the die mechanism shown in Fi 2. the upper die being removed to facilitate illustration.

Fig. 7 is an enlarged perspective view of the gage key.

Fig. 8 is an enlarged perspective view of the gage plate.

Fig. 9 is a key showing perspective view of the gage the lower gaging the Serial No. 179,952.

and a lower swaging die 2 adapted to cooperate with a movable upper swaging die block 3, the latter being reciproeated by a suitable motor 4 and controlled through valve operating mechanism 5 by means of operative connections 6 controlled by a foot lever 7 In the construction illustrated, the swaging dies 2 and 3 carry the gaging mechanism and are each provided with the usual swag ing apertures 8 and 9 therein adapted to swag-e the bit to substantially the "form de sired, these apertures for purposes of illustration herein being shown as those adapted to bring the bit to the form ofa cross bit, although obviously apertures adapted to produce other forms of bits may be used if desired. As shown, these cooperating apertures S and 9 on the different dies are preferably disposed at one side of the center line of the die blocks 2 and 3 and longitudinally thereof so that an operator stand ing in front of the machine may readily insert the steel between the same and withdraw the steel therefrom, and my improved gaging dies are preferably, though not necessarily. disposed on the opposite side of the center line of the die blocks and relatively close to the apertures 8 and 9so that the drill steel. may be readily shifted from one set of dies tothe other. If desired, suitable working surfaces, herein flattening surfaces 10, may be provided between the two sets of dies so that these surfaces may be available for ordinary steam hammer purposes. It will be noted that I have vented the sides of my swaging dies as at 9 to permit the escape of scale.

In the form of my improvement shown herein, the upper die 0 is provided with a longitudinally disposed gaging groove 11 having a tapered bottom 12 disposed substantially at an angle of five degrees to the horizontal and extending from one end of the block to the other, a suitable laterally disposed slot or groove 13 being provided t receive one of the laterally disposed wings on the bit when the vertically disposed wings of the cross bit are engaging with the surface 12. It will be noted from Figs. 2, 3 and ll that the curvature of the surface 12 at the rear end of the same, that is, the end adapted to gage bits of maximum gage, is substantially flatter than the curvature of the same at the front end of the die, that is, the end adjacent which hits of minimum gage are operated on, and that the surface joining these curvatures is flatter at any point than an arc of circle corresponding to the gage of a bit to be gaged at that point. In Fig: 11 there is apprornmately shown the relative curvature of the opposite ends of the surface 12, as compared with the Cill'ldtures of bits of the maximum. and minimum gages to be treated. Thus. it will be seen that a surface 12 is produced which is adapted to cooperate with a cooperating gaging surface of fixed curvature carried on the lower die, hereinafter described, and also adapted to form reaming on bits of varying gage as the same are gaged. operating with the gaging die thus formed on the upper swinging die 3, is the gagim; mechanism carried by the lower die. As shown, this die is provided with a longitudinally disposed grooved or cut-a *ay portion 1% disposed immediately beneath the groove l1 in the upper die -3 and. having an. inclined. bottom surface 15 preferably posed in a single plane and at an an the horizontal of ten degrees, or tire as many degrees as the irurlination of the surface 12. Disposed in this groove 14%, is a gaging key or die 16 having a lower inclined. surface adapted to engage with and slide over the surface 15, and disposed at the same angle as the latter, and an upper surface 17 disposed substantially in a horizontal plane. As shov-rin this key is also pro vidcd with an upstanding abutment 18 at its rear end and on its upper surface, adapted to be engaged by the cutting edge of the steel and herein provided with a .-entral notch having tapered laterally diverging sides 19, the upper surfaces of the notch walls also preferably being sloped away as shown at 20. its illustratech the space in front of thenotch is also cut a my as shown at 2]., preferably at an angle corresponding to the angle of the surface 12 in such a man-- nor as to receive the portion of the bit Hi-- jacenjt the cut-ting edge thereof. The curvature of the surface 21 bears such a relation. to that of the surface 12, the same herein for example being a mean of the latter surface, that a surface gaged exactly to the desired shape by the surface 12 will not be ma-- terially altered in shape when turned so as to rest upon the surface 21 while the opposite wing is being gaged. It will therefore be obvious that two wings of a cross bit will be substantially perfectly formed and that the otners will deviate only in the minutest manner from perfect contour and well within commerical limits. From the foregoing it will be clear that a bit inserted over the surface 17 with its end in position against the abutment 18, will be acted upon by the two surfaces 21 and 12 in such a manner as to gage the same and produce a live-degree taper on the wings thereof as far back as the surface 21 is extended.

in my improved construction the gage key 16 is preferably adjustable longitudh nally of the surface 15 on the lower swaging die 2 so that various gages may be readily obtained, the key being slid-able along the surface 15 and the adjacent wall of anouter confining n'ieniber herein shown in the form of a vertically disposed gage plate 22 suitably clamped to the lower die 2 by means of bolts 23, in such a manner as to confine the key it; against vibration and yet permit a longitudinal movement of the latter. Obviously, with such aconstruction it is only necessary to slide the gage key longitudinaily of the die 2 to vary the gage obtainable as desired and at the same time, due to the provision of the cooperating surfaces 21 and i2, to produce the desired taper on the working end of the bit regardless of the position of the gage key relative to the up per surface 12. While various other means may be used to maintain the gage hey 16 in position, i have herein provided improved means whereby the same may be definitely locked in a wide range of different posi 'tions and adjusted with .great facility. These means, as showm include an adjustable rigid connection between. the gage key 1.6 and the plate 22, and includes. downwardly extending tail portion 21 formed on the gage. key and provided with a series of aligned apertures 25 therein and a tail portion 26 on thegage plate provided with a plurality of series or aligned apertures 28. 29.. and 30. the apertures in each series being disposed in staggered. relation with respect to those in the other series, and the several apertures being adjustable into registering relation as the gage key is moved longitudinally relative to the surface so that when the key is so adjusted asto bring one of the apertures 25 into re'z'istrv with an aperture in the gage plate. the parts may be locked together by a suitable.lockine means. shown herein to include clamping mechanism comprising a bolt 31 adapted to grip the tail portion 24, and an adjustable threaded nut 32 adapted to be disposed on the outside of the gage plate 22 so as to be readily accessible to the operator.

In the use of my improved construction, I have found that thevarious gages may be readily indicated uponthe upper surface of the gage plate tail 26, the same being indicated, as shown in Fig. 6,by a series of parallel lines constituting projections of the axes of the holes in the series 27. 28. 29. 30. Thus, when these lines are ma 1.. with the different gages, even an inexperienced or ignorant operator may very r adily change the gage as desired by shifting the bolt into the registering holes corresponding to any given line. For instance. with the arrange ment of holes shown in Figs. and 6, a total variation in gage of one inch is obtained, in one-sixteenth inch changes. although ob viously greater intermediate changes maybe obtained by skipping any desired number of intermediate positions. It will also be evident that. as shown in Fig. the largest gage will be obtainable when the key 1.6 is at one limit of its travel and that the smallest gage is obtainable when the key is at its opposite limit of travel. the intermediate gaging positions being located between these limits.

As a result of my improvement; it will be noted that anexceedingly wide range o variation in gage is obtainable without the necessity for providing any loose parts which are adapted to become worn in service, the several elements constituting in effect a unitary construction. It will also be ob served that despite the variations in gage. the bit may be provided with the desired tapering working end,- the angle of taper on the bit being maintained uniform regardless of the size of. the bit and each bit having that contour which provides reaming; edges. Attention is also directed to the fact that the device is very conveniently-located with respect to the swaging dies so that the operator may-readily correct the gage by simply transferring the bit to the dies momentarily without the necessity for interrupting the operation of the swaging dies or the provision of any separate operating or controlling mechanism for the former. These and other advantages of my improved construct-ion will. however. be clearly apparent to those skilled in the art.

- while if have in this application specifically described one embodiment which my invention may assume in practice. it is to be understood that the invention is not limited thereto but may be modified and embodied in various other forms without departing from its spirit. it being my intention to include all such modifications within the scope of the appended claims.

"What I claim as new and desire to secure by Letters Patent is:

1. Gaging die mechanism comprising a plurality of dies including one die having a gaging groove therein of curved section and of flatter transverse curvature at one end than at the other.

2. Gaging die mechanism comprising a plurality of dies, one of said dies being stationary and the other movable and having a gaging groove therein of curved section and of flatter transverse curvature at one end than at the other.

3. Gaging die mechanism comprising a plurality of dies including one having a gaging groove therein of curved section and of flatter transverse curvature at one end than at the other, and means cooperating with said dies for locating a work piece at longitudinally different positions between said dies.

4. Gaging die mechanism comprising a plurality of cooperating dies including a die having a transversely curved work engaging surface whose curvature varies from end to end of said surface and whose trace on a transverse plane is flatter at any point therealong than the arc of a circle of a diplurality of dies, one of said dies being stationary and adapted to support a drill bit and the ther die being movable and having a gaging groove therein of curved sectlon and of flatter transverse curvature at one end thanfat the other and presenting a bit engaging surface between its ends flatter at any point than an arc of a circle corresponding to the gage of a bit t be gaged at such point and resting on said stationary die.

6. In a forging machine, a stationary member. a member movable toward and away from said first mentioned member, and a gaging die member adjustably attached to one of said members and cooperating with the other thereof to gage and forge a piece of work.

7. In forging machine. means for tapering the working end of a bit including adjustable die means for varying the gage of successive bits without varying the taper thereon. i

8. In a forging machine aein members L. 3 7 C i 2": for tapering the working end of a bit including means for adjusting the working face of one of said members to vary the gage without varying the taper. i

9. In a forging machine, stationary and movable swaging members each having a sloping surface thereon and a gaging die adjustable longitudinally on one surface and cooperating with the other.

LO. In a forging mechanism, a die support having a groove therein, a gaging die slidable longitudinally in said groove and iii having an upper working face, and means for locking said die in a plurality of positions in said groove.

11. In a forging mechanism, a die support having a longitudinal groove therein, a gaging die slidable longitudinally in said groove and having an upper working face and an abutment thereon, and means for locking said die in a plurality of positions in said groove.

12. In a forging machine, stationary and movable members having inclined surfaces disposed at different angles, and a gaging die adjustable along the surface having the greater angle and having an upper worlo ing surface disposed at the same angle as the-other surface.

18. In a forging mechanism, a die sup port having a groove therein provided with a sloping bottom, and a gaging die having an inclined surface slidable over the bottom of-said groove, said die being provided with a working surface on its upper face and an abutment adjacent the same engageable with the cutting edge of a bit.

1 1. In a forging machine, a die support having an inclined groove therein, and a gaging die adjustable longitudinally of said groove and having a fiat upper face provided with an inclined working surface adjacent one of its ends and an abutment adjacent one end of said working surface engageable with the cutting edge of a int.

15. In a forging machine, swaging dies comprising stationary and movable members having cooperating sloping grooves therein and a gaging die adjustable longitudinally of one of said grooves and having a working surface cooperating with the bottom of the other groove, and means for locking said die to its member.

16. In a forging machine, stationary and movable members having inclined surfaces disposed at different angles to a line perpendicular to the line of movement of said movable member, a gaging die adjustable along the surface making the greater angle and having an outer working surface disposed at the same angle to said perpendicular line as the other surface but on the other side of said perpendicular line therefrom, whereby the total angle between said adjacent surfaces is double the angle of either to said perpendicularline and said total angle is bisected by the axis of a work piece between said surfaces, and means for'locking said die in'position.

17. In a forging machine, stationary and movable members having inclined surfaces disposed at different angles, and a gaging die adjustable along the surface having the greater angle andhaving a working surface disposed at the same angle as the other surface and a work engaging abutment adjacent said last mentioned surface.

18. In a forging machine, stationary and movable members having inclined surfaces disposed at different angles, a gaging die adjustable along the surface having the greater angle and having a working surface disposed at a smaller angle than the last mentioned surface, and means for locking said die in a plurality of positions with respect to said other surface.

19. In a forging machine, a die carrying member, a gaging die adjustable relative thereto, a gage plate fixed relative to said die carrying member, and means for locking said gaging die to said gage plate in any one of a plurality of positions.

20. In a forging machine, a die carrying member, a gaging die adjustable relative thereto, a gage plate fixed relative to said die carrying member, and means for look ing said gaging die to said gage plate including registering apertures in the different elements.

21. In a forging machine, a member, a gage key member adjustable relative thereto, and means for locking the parts together including a series of apertures in one of said members and an aperture in the other member adapted to register successively with said apertures.

22, In a forging machine, a member, a gage key member adjustable relative thereto, and means for locking the parts together including a series of aligned apertures in one of said members and a plurality of series of aligned apertures on the other member.

23. In a forging machine, a member, a gage key member adjustable relative thereto. and means for locking the parts together including a. series of apertures in one of said members and a plurality of series of apei tures in the other adapted to register with said first mentioned apertures. the series on one member being disposed at an angle to a line parallel to the series of the other.

24-. In a forging machine, a member, a gage key adjustable relative thereto, a gage plate fixed relative to said member, and means for locking said gage key to said gage plate in any one of a plurality of positions including an aperture in said key and a plurality of apertures in said plate adapted to register therewith. I

25. In a forgingmachine. a member, a gage key adjustable relative thereto, a gage plate fixed relative to said member. and

means for locking said gage key to said gage plate in any one of aplurality of positions including a plurality of apertures in said key and a plurality of apertures'in said plate adapted to register therewith.

26. In a forging machine. a member. a gage key adjustable relative'thereto, a gage plate fixed relative to said memberfand means-forlocking saidgage key to said gage plate in any one of a plurality of positions including a plurality of apertures in said key and a plurality of series of apertures in said plate adapted to register therewith.

27. In a forging'machine, a member, a gage key adjustable relative thereto, a gage plate fixed relative to said member, and

means for locking said gage key to said gage plate in any one of a plurality of positions including a plurality of aligned aperturesin said key and a plurality ofseries of aligned apertures in said plate adapted to register therewith.

28, In a gaging mechanism, a supportingof said grooves and having a working sur,

face cooperating with the bottom of the other groove, and means for locking said key to its die including a plurality of registering apertures and locking means .disposable in said apertures.

30. In a gaging mechanism,- asupporting member, a gage key adjustable relative thereto and having an angularly extending portion provided with an aperture therein, a age plate disposed parallel to said key and fixed to said support and having a projecting portion provided with a plurality of apertures therein, and locking means includ ing a clamping bolt disposable through the registering apertures and a nut threaded on said bolt.

31. In a forging machine, means for gaging a tapered bit comprising dies having work engaging surfaces formed at a less angle than the angle of the bits to be gaged thereby and adapted to engage the peripheral surface of the'forward end of such a bit and change the angle of taper there-0f.

32. In a forging machine, means for tapering the working end of a bit including adjustable rigid die means having opposed surfaces formed to such curvature as to vary the gage of successive bits by swaging a terminal tapered portion of uniform length.

33. In a forging machine, a pair of swaging dies having opposed surfaces inclined in opposite directions at equal angles, one of said dies being a key, and a support for said key, the engaging surfaces of said key and support being equally inclined and at a greater angle than the swaging surface of said key and cooperating with each other to adjust said key.

84. In a forging machine, a die carrying member, a gaging die member adjustable relative thereto, and means for adjusting said members including an aperture in one of said members and a plurality of apertures in the other adapted for registration therewith.

35, In a forging machine, stationary and movable members, one of said members having a groove therein whose bottom is dis posed at an angle to the line of movement of said movable member, a gaging die slidable in said groove, and means for locking said die in a plurality of positions in said groove.

36. In a forging machine, stationary and movable members, a gaging die member carried by one of said members and adjustable thereon in a line making an angle with the line of movement of said movable member, and means forlocking said die member in a plurality of adjusted positions on said die carrying member.

87. Gaging die mechanism comprising a plurality of dies including a die having a gaging groove therein of curved sectionand of flatter transverse curvature at one end than at the other, and a cooperating die having a recess opposite to and adapted to cooperate with said gaging groove during gaging of a work piece and having also an abutment adapted to be engaged by and to position a work piece.-

In testimony whereof I aflix my signature.

FRANK A. HALLECK. 

